210.103.247.0/24

AS10158 · Kakao Corp

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Summary

Country	South Korea
Domain	sejongnetworks.com
ASN	AS10158
Parent Range	210.103.128.0/17
Registry	APNIC
ID	KRNIC-KR

WHOIS Details

inetnum:        210.103.224.0 - 210.103.255.255
netname:        KRNIC-KR
descr:          KRNIC
descr:          Korea Network Information Center
country:        KR
admin-c:        HM127-AP
tech-c:         HM127-AP
remarks:        ******************************************
remarks:        KRNIC is the National Internet Registry
remarks:        in Korea under APNIC. If you would like to
remarks:        find assignment information in detail
remarks:        please refer to the KRNIC Whois DB
remarks:        http://whois.nic.or.kr/english/index.html
remarks:        ******************************************
mnt-by:         MNT-KRNIC-AP
mnt-lower:      MNT-KRNIC-AP
status:         ALLOCATED PORTABLE
last-modified:  2017-12-20T07:17:13Z
source:         APNIC
mnt-irt:        IRT-KRNIC-KR

irt:            IRT-KRNIC-KR
address:        9, Jinheung-gil, Naju-si, Jeollanam-do
e-mail:         irt@nic.or.kr
abuse-mailbox:  irt@nic.or.kr
admin-c:        IM574-AP
tech-c:         IM574-AP
auth:           # Filtered
remarks:        irt@nic.or.kr was validated on 2020-04-09
mnt-by:         MNT-KRNIC-AP
last-modified:  2025-09-04T01:00:01Z
source:         APNIC

person:         Host Master
address:        Jeollanam-do Naju-si Jinheung-gil
country:        KR
phone:          +82-2-405-5118
e-mail:         hostmaster@nic.or.kr
nic-hdl:        HM127-AP
mnt-by:         MNT-KRNIC-AP
last-modified:  2019-05-22T01:20:31Z
source:         APNIC

inetnum:        210.103.128.0 - 210.103.255.255
netname:        SEJONG-KR
descr:          SEJONG NETWORKS
country:        KR
admin-c:        IA10-KR
tech-c:         IM10-KR
status:         ALLOCATED PORTABLE
mnt-by:         MNT-KRNIC-AP
mnt-irt:        IRT-KRNIC-KR
changed:        hostmaster@nic.or.kr 20240912
remarks:        This information has been partially mirrored by APNIC from
remarks:        KRNIC. To obtain more specific information, please use the
remarks:        KRNIC whois server at whois.kisa.or.kr.
source:         KRNIC

person:         IP Manager
address:        12 Gwacheon-daero 7-gil, Gwacheon-si, Gyeonggi-do
address:        (Galhyeondong)
country:        KR
phone:          +82-2-1688-2200
e-mail:         ip@sejongnetworks.com
nic-hdl:        IA10-KR
mnt-by:         MNT-KRNIC-AP
changed:        hostmaster@nic.or.kr 20240912
remarks:        This information has been partially mirrored by APNIC from
remarks:        KRNIC. To obtain more specific information, please use the
remarks:        KRNIC whois server at whois.kisa.or.kr.
source:         KRNIC

person:         IP Manager
address:        12 Gwacheon-daero 7-gil, Gwacheon-si, Gyeonggi-do
address:        (Galhyeondong)
country:        KR
phone:          +82-2-1688-2200
e-mail:         ip@sejongnetworks.com
nic-hdl:        IM10-KR
mnt-by:         MNT-KRNIC-AP
changed:        hostmaster@nic.or.kr 20240912
remarks:        This information has been partially mirrored by APNIC from
remarks:        KRNIC. To obtain more specific information, please use the
remarks:        KRNIC whois server at whois.kisa.or.kr.
source:         KRNIC

Overlapping Ranges

BGP prefixes that contain 210.103.247.0/24

Range	ASN	Company	Num of IPs
210.103.128.0/17	AS23593	SEJONG NETWORKS	32,768
210.103.128.0/17	AS9848	SEJONG NETWORKS	32,768

Nearby Ranges

BGP prefixes that overlap with 210.103.0.0/16

Range	ASN	Company	Num of IPs
210.103.128.0/17	AS23593	SEJONG NETWORKS	32,768
210.103.128.0/17	AS9848	SEJONG NETWORKS	32,768
210.103.187.0/24	AS131866	Its-in	256
210.103.152.0/24	AS38676	FLEXNET	256
210.103.137.0/24	AS131866	Its-in	256
210.103.154.0/24	AS38676	FLEXNET	256
210.103.155.0/24	AS38676	FLEXNET	256
210.103.176.0/24	AS38676	FLEXNET	256
210.103.153.0/24	AS38676	FLEXNET	256
210.103.138.0/24	AS131866	Its-in	256

Hosted domains

There are no domains currently hosted on this ASN.

Hosted domains API

Our Hosted Domains API, or Reverse IP API returns a full list of domains that are hosted on a single IP address.

Useful for Cybersecurity

Read more

Pingable IPs

No IPs in this range replied to an ICMP ping during our most recent internet scan. Learn more.

Other Pingable IPs

Below is a random selection of 25 IPs that replied to an ICMP ping during our most recent internet scan.

IP Address	ASN	Details
144.6.25.104	AS4764 Aussie Broadband	`0.87ms` from Adelaide, AU
89.216.3.56	AS31042 Serbia BroadBand-Srpske Kablovske mreze d.o.o.	`0.75ms` from Belgrade, RS
78.131.120.40	AS20845 DIGI Tavkozlesi es Szolgaltato Kft.	`1.03ms` from Budapest, HU
1.95.217.136	AS55990 Huawei Cloud Service data center	`1.00ms` from Guiyang, CN
81.187.191.200	AS20712 Andrews & Arnold Ltd	`2.72ms` from London, GB
94.142.95.88	AS48620 Beaming Ltd	`0.22ms` from London, GB
160.218.107.24	AS5610 O2 Czech Republic, a.s.	`12.56ms` from Prague, CZ
27.198.226.8	AS4837 CHINA UNICOM China169 Backbone	`7.51ms` from Qingdao, CN
44.215.160.120	AS14618 Amazon.com, Inc.	`0.20ms` from Reston, US
221.155.179.184	AS4766 Korea Telecom	`1.66ms` from Seoul, KR
125.244.62.168	AS9316 DACOM-PUBNETPLUS	`3.37ms` from Seoul, KR
14.1.86.248	AS14593 Space Exploration Technologies Corporation	`10.73ms` from Sydney, AU
73.207.101.248	AS7922 Comcast Cable Communications, LLC	`4.42ms` from Atlanta, US
78.187.237.72	AS9121 Turk Telekomunikasyon Anonim Sirketi	`18.86ms` from Bursa, TR
223.178.94.184	AS24560 Bharti Airtel Ltd., Telemedia Services	`0.99ms` from Chennai, IN
76.245.250.88	AS7018 AT&T Enterprises, LLC	`19.92ms` from Chicago, US
181.91.230.72	AS7303 Telecom Argentina S.A.	`9.58ms` from Cordoba, AR
20.221.121.72	AS8075 Microsoft Corporation	`0.34ms` from Des Moines, US
40.120.101.8	AS8075 Microsoft Corporation	`0.94ms` from Dubai, AE
139.59.153.8	AS14061 DigitalOcean, LLC	`0.26ms` from Frankfurt am Main, DE
42.121.23.8	AS37963 Hangzhou Alibaba Advertising Co.,Ltd.	`3.76ms` from Hangzhou, CN
14.71.252.232	AS4766 Korea Telecom	`1.48ms` from Incheon, KR
1.247.172.184	AS9318 SK Broadband Co Ltd	`2.80ms` from Incheon, KR
94.1.175.184	AS5607 Sky UK Limited	`7.89ms` from London, GB
67.169.233.120	AS7922 Comcast Cable Communications, LLC	`7.65ms` from Los Angeles, US

Traceroute

Below is a recent traceroute taken from the IPinfo ProbeNet to an IP in this range. Learn more.

traceroute -a -n -q1 -f4 -m9 210.103.247.19

traceroute to 210.103.247.19 (210.103.247.19): 9 hops max, 52 byte packets

4 [AS174] 199.100.16.49 55.601 ms

5 *

6 [AS174] 154.54.168.85 136.683 ms

7 *

8 *

9 *

Measurement taken from

IPinfo ProbeNet in Curicó, CL

On January 30th 2026

What are IP address ranges?

IP address ranges, or netblocks, are groups of related IP addresses. They are usually represented as a base IP address, followed by a slash, and then a netmask which represents how many IP addresses are contained within the netblock. This format is known as CIDR. You'll also sometimes see netblocks given as a start ip address, and an end ip address, or an ip address range.

Traffic works its way around the internet based on the routing table, which contains a list of networks and their associated netblocks.

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